Isolator assembly

Abstract

An isolator assembly includes a bracket, a first isolator connected to the bracket, a second isolator connected to the bracket, and/or a mass connected to the bracket via the first isolator and the second isolator. The first isolator and the second isolator may include a plurality of legs. The first isolator may include a first radial flange and a second radial flange. The first radial flange and the second radial flange may be axially spaced from each other. An outer diameter of the first radial flange may be larger than an outer diameter of the second radial flange. A distance between the first radial flange and the second radial flange may correspond to a thickness of the bracket.

What is claimed is: 
     
       1. An isolator assembly, comprising:
 a bracket having a base and a first tab and a second tab extending from opposite ends of the base, the first tab and the second tab each having an aperture; 
 a first isolator connected to the first tab and at least partially received in the aperture of the first tab; 
 a second isolator connected to the second tab and at least partially received in the aperture of the second tab; 
 a mass connected to the bracket via the first isolator and the second isolator; 
 a first pin connected to the first isolator, the first pin extending through the aperture of the first tab, and extending into a first recess of the mass; and 
 a second pin connected to the second isolator, the second pin extending through the aperture of the second tab, and extending into a second recess of the mass; 
 wherein the first isolator and the second isolator each includes a plurality of support members extending radially and connecting an inner portion and an outer portion, the outer portion is axially offset from the inner portion and an opening is provided circumferentially between successive support members; and, in a plan view, the base is perpendicular to the first tab and the second tab, and the base extends from the first tab to the second tab in a longitudinal direction parallel to a longitudinal axis between the apertures of the first and second tabs. 
 
     
     
       2. The isolator assembly of  claim 1 , wherein the first isolator and the second isolator each includes a first radial flange and a second radial flange. 
     
     
       3. The isolator assembly of  claim 2 , wherein the first radial flange and the second radial flange are axially spaced from each other; and an outer diameter of the first radial flange is larger than an outer diameter of the second radial flange. 
     
     
       4. The isolator assembly of  claim 3 , wherein a distance between the first radial flange and the second radial flange corresponds to a thickness of a respective one of the first tab or second tab of the bracket. 
     
     
       5. The isolator assembly of  claim 2 , wherein the second radial flange is configured for insertion into the aperture in a respective one of the first tab or the second tab of the bracket and to increase a removal force of the first isolator from the bracket; and the first radial flange is configured to limit an insertion depth of the first isolator into the aperture. 
     
     
       6. The isolator assembly of  claim 5 , wherein an outer diameter of the second radial flange is greater than an inner diameter of the aperture. 
     
     
       7. The isolator assembly of  claim 5 , wherein the aperture is offset from a center of the respective one of the first tab or the second tab. 
     
     
       8. The isolator assembly of  claim 1 , wherein the first isolator and the second isolator each include a plurality of legs extending axially from a surface of the respective first isolator and second isolator. 
     
     
       9. The isolator assembly of  claim 8 , wherein a number of support members of the plurality of support members is equal to a number of legs of the plurality of legs. 
     
     
       10. The isolator assembly of  claim 8 , wherein the inner portion extends axially beyond the outer portion toward the mass. 
     
     
       11. The isolator assembly of  claim 8 , wherein at least two legs of the plurality of legs include portions disposed at an inner surface of the outer portion. 
     
     
       12. The isolator assembly of  claim 8 , wherein the plurality of legs extend substantially in an axial direction toward the mass. 
     
     
       13. The isolator assembly of  claim 1 , wherein the plurality of support members that connect the inner portion and the outer portion comprise an elastomeric membrane. 
     
     
       14. The isolator assembly of  claim 1 , wherein the first isolator is formed separately from the mass. 
     
     
       15. The isolator assembly of  claim 1 , wherein a cross-sectional shape of the first isolator is substantially rectangular. 
     
     
       16. The isolator assembly of  claim 15 , wherein the first isolator includes a first side having a first length and a second side have a second length; the first length corresponds to a first frequency; the second length corresponds to a second frequency; and the first frequency and the second frequency are different. 
     
     
       17. A method of assembling an isolator assembly, comprising:
 providing a first isolator, a second isolator, a bracket, a first pin, a second pin, and a mass, the bracket having a base and a first tab and a second tab extending from opposite ends of the base, the first tab and the second tab each having an aperture, the first isolator and the second isolator each including a plurality of support members extending radially and connecting an inner portion and an outer portion, the outer portion is axially offset from the inner portion and an opening is provided circumferentially between successive support members; 
 connecting the bracket with an assembly fixture; 
 connecting the mass with the assembly fixture; 
 connecting the first isolator with a press; 
 connecting the second isolator with the press; 
 inserting the first isolator into the aperture of the first tab and the second isolator into the aperture of the second tab via the press; 
 inserting the first pin into the first isolator and a first end of the mass; and 
 inserting the second pin into the second isolator and a second end of the mass; 
 wherein, in a plan view, the base is perpendicular to the first tab and the second tab, and the base extends from the first tab to the second tab in a longitudinal direction parallel to a longitudinal axis between the apertures of the first and second tabs; the first pin is connected to the first isolator, the first pin extends through the aperture of the first tab, and the first pin extends into a first end of the mass; and the second pin is connected to the second isolator, the second pin extends through the aperture of the second tab, and the second pin extends into a second end of the mass. 
 
     
     
       18. The method of  claim 17 , wherein inserting the first isolator and the second isolator into respective apertures includes (i) inserting a first radial flange of the first isolator and a first radial flange of the second isolator into the respective apertures, and (ii) limiting insertion via a second radial flange of the first isolator and a second radial flange of the second isolator; and, after inserting the first isolator and the second isolator into the respective apertures, a first portion of the bracket is disposed partially between the first radial flange and the second radial flange of the first isolator, and a second portion of the bracket is disposed partially between the first radial flange and the second radial flange of the second isolator. 
     
     
       19. An isolator assembly, comprising:
 a bracket including a base and a first tab and a second tab extending from opposite ends of the base, the first tab and the second tab each having an aperture; 
 a first isolator connected to the bracket; 
 a second isolator connected to the bracket; and 
 a mass connected to the bracket via the first isolator and the second isolator; 
 wherein the first isolator and the second isolator are integrally formed with the mass; the first isolator includes a radial flange; an outer diameter of the radial flange is larger than an inner diameter of the aperture of the first tab; and the first isolator and the second isolator each includes a plurality of support members extending radially and connecting an inner portion and an outer portion, the outer portion is axially offset from the inner portion and an opening is provided circumferentially between successive support members; and, in a plan view, the base is perpendicular to the first tab and the second tab, and the base extends from the first tab to the second tab in a longitudinal direction parallel to a longitudinal axis between the apertures of the first and second tabs; and the diameter of at least one of the aperture of the first tab and the aperture of the second tab is greatest at an axial end and includes an internal taper toward a center of the bracket and/or toward the mass.